Dewatering and replacement apparatus.



G. MOORE.

uEwATfRsNG Ms SEPLACEMNT APPARATUS.

Patented June 26,` 1917.

new: o

GEORGE MOORE, 0F TOPLIRQ MISSOURI.

DEWATERING AND REPLACEMENT APPARATUS.

Specification of Letters Patent.

Patented June 26, 191 7.

Application led December l, 1914. Serial No. 876,742.

To all 'whom it may concern.'

Be it known that l, GEORGE Moons, a citizen of the llnited States,residing at Joplin. in the county of Jasper and Slate of Missouri, ha veinvented certain new and useful Improvements in Dewatering and Replacement Apparatus; and l do hereby declare the following to be a full,clear, and exact description of the invention. such as will en ableothers skilledin the art lo which it appertains to make and use thesame.

This invention relates to improvements in fle-Watering and replacementaliparatus o'l the type especially adapted for ettective use in thereplacing o' liquid possessing dissolved cor'ents in Solids by liquidpossessing less dssolved contents or no dissolve-Ll contents.

T he object in View is increasing the speed ol replacement both byincreasing the speed of settling of suspended solids into coagulatedsettled masses and by moving llie solids against a counter current ofreplacing liquid.

W ith this and further objects in view as will in pabrt. hereinafter hestated and in part become apparent, the invention comprises certainnovel constructionsV combinations and arrangements of parts as willsubsequently more fully appear and thereafter be particularly pointedout in the claims.

ln the accompanying drawing: Figure l is a sectional elevation ol anapparalus einbodyirg the features of the pres ent invention` the settlerbeing seen in end view and a portion of the tank in section.

Fig. il is a vertical section through the part seen in Fig. l, thesection being taken approximately on the plane of the axes of thcsettler, and parts of the settler being seen in elevation. Fig. 3 is adetail fragmentary View showing the parts on an exaggerated scale.

Fig. al is a View similar to Fig. 1 of a further embodiment.

Fig. 5 is a sectional elevation on a greatly reduced scale of a furtherembodiment.

Fig, 6 is an enlarged, fragmentary plan showing a slightly modified formof settler plate.

Referring to the drawing by numerals, 1 indicates a tank having a hopperbottom 2, provided-with the discharge at its lower end controlledlyivalve 3. At the upper portion of tank 1. a laiinder 4f or otherappropriate conduit for the discharge of solutions is provided. A pulp:supplyl pipe 5 extends into tank l and is adapted to receive pulp fromany appropriate source.

Fixed to each end of tank 1 is a bracket il cach ot' which is in theform oli a U-shaped liar providing a vertical channel lcrininat` ing atits lower end in a bearing in which is mounted the respective journal Tof the rotary settling apparatus, consisting essentiall);r of apluralityT oi' juxtaposed sluier-iniposcd plates 8. S. lVhile plates 8.S may bc of fabric or other .suitable material, they are preferahl)Vofrelatively thin metal. as for instance, sheet steel of llie thicknessof approximatelyv ouc-thousandth oll an inch. and cach is spaced abovethe next lower plate :L distance appropriate for insuring rapid seltlingof suspended solids. the distance being prct'erabl)v relativenF verysmall. iu practice usually boing about one quarter of an ineli. Theplates by preference are of different widths. varying from the narrowestat tllc top and bottom to the widest at the center, so that the completeassemblage ol plates which will. for convenience. he referred lo :is thesettler. forms approximately a cylinder. llach plate is formed withapertures :lil for enabling i'ree access and circul-.ition of' solids ofpulp to and about inner portions ot the plaies. s seen in Fig. 5 inaddition lo the apertures 'll. each plate may he formell of strips 8having longitudinal spaces therebetween, or the, spaces lna lie employedin lieu of the apertures. 'l'lie plaies` are held in 'their spacedrelation liv appropriate rel-.Lin ing means. such. for instance, asthrough bolts il. l). retaining thc spacers lll. l0 in position betweenthe several plates. Each spacer l0 consists of a strip of wood or otherappropriate material extending transversely' of the plates 8 and of alength equal to the width of the particular plates engaged, the ends ofeach strip being beveled or round fl oli' so that at one face the stripis the saine length as the Width of one plate and at the other face, thestrip is the saine length as the width of the other plate. Extendingacross each end of the settler is a flat bar or 'other Vappropriatejournal support 11, having terminal flanges l2 extending over theuppermost and beneath the lower-most plate 8, the ianges being engagedby the respective terminal through bolts l). Each plate ll is providedwith the outstanding journal 7, which journals are axially alined on thelongitudinal axis of the, settler.

outlet 3. At the launder 4 is provided for or less clarified solutions.Pulp is supplied to the tank 1 through the supply apparatus 5', whichdelivers the pulp at a `point near but not at the upper end of the tank.Barren solution is supplied through pipe 24 to the tank about midway ofits len th, and wash water is supplied to the tan at the lower portionthereof through pipe 23'. A series of settlers 28', similar instructure, mounting and operation to the settlers 28, are arranged oneabove the other in tank 1, the operating or rotating apparatus beingomitted from the showing.

The operation of the structure seen in Fig. 5 is quite similar to thatabove set forth, differing only in degree as to the number of platespositioned for being struck by descending masses of solids. Inoperation, the pulp is supplied through pipe 5 and barren solution andWash Water are supplied in quantities sutlicient for replacement, thequantities being governed according to the nature of tailings dischargedat 3. The pulp solids are permitted to settle on the plates of settlers28 until an appropriate sheet or mass of coagulated settled solids isformed on each of the plates, and thereupon, the plates are moved from ahorizontal to a vertical position, that is, from a position adapt-ed tosustain settled solids to a position enabling gravity discharge thereof.In this position, the edges of all the plates will be exposed `upward,and descending masses of solids will repeatedly contact with the edgesof the plates of the successive settlers and thus be interrupted intheir descent and suiiciently broken to afford opportunity for effectivereplacement in the mass of settled solids of the contained solutions bysolutions of less dissolved contents or of no dissolved contents. Thesolution of maximum dissolved contents is drawn oil1 through launder 4while the moisture discharging With solids drawn off at 3 is free fromdissolved contents, or at least as free as can be maintained whileeiectively Working the apparatas.

Vinit I claim is:

l. In apparatus of the class described, the combination, with acontainer, of spaced plates movably mounted therein and adapted. whilemaintained substantially without reduction in the relative spacing, tobe upper end of the tank, the decanting the more moved from a positionfor sustaining settled solids of pulp to a position enabling gravitydischarge of such solids from the plates.

2. In apparatus of the class described, the combination, with acontainer, of spaced plates rigidly connected together and movablymounted in the container, and means for moving the plates from aposition for sustaining settled solids of pulp to a position enablinggravity discharge of such solids from the plates.

3. In apparatus of the class described, a series of successivecontainers connected for the flowing of contained liquid from thecontainer at one end of the series toward the container at the other endof the series, plates movably mounted in one of the containers andadapted to be moved substantially Without variation in location relativeto each other from a position for sustaining solids settled thereon fromthe contained liquid to a position enabling gravity discharge of suchsolids from the plates, and means' for delivering the discharged solidsto a container in the rear relative to the direction of flow of thecontained liquid.

4. In an apparatus of the class described, the combination with acontainer, of a plurality of series of movably mounted lates, one of theseries being superimpose with respect to another, and means for movingthe several plates from a position for sustaining the settled solids toa position enabling gravity discharge from the plates, a plate of thesuperimposed series being positioned relative to a plate of the subposedseries for causing gravity discharge solids from the superimposed plateto contact with the edge of the subposed plate in the course of descent.

5. In an apparatus of the class described, the combination, with acontainer, of spaced plates connected to form a relatively rigid bodyand movably mounted as a body and adapted to be moved from a positionfor sustaining settled solids of ulp to a position enabling gravitydiscliarge of such solids from the plates.

In testimony whereof I affix in presence of two witnesses.

GEORGE MOORE.

my signatu re Witnesses:

L. H. Moons, E. G. HoAG.

